7.2 Hypothesis Testing with Standard Deviation Known

You wish to test the claim that μ ≠ 36 at a level of significance of α = 0.05 and are given sample statistics n=35, x=35.1 . Assume the population standard deviation is 2.7. Compute the value of the standardized test statistic. Round your answer to two decimal places. Select one:

-1.97

You wish to test the claim that μ = 1420 at a level of significance of α = 0.01 and are given sample statistics n=35, x=1390. Assume the population standard deviation is 82. Compute the value of the standardized test statistic. Round your answer to two decimal places. Select one:

-2.16

Find the critical value and rejection region for the type of z-test with level of significance α.Two-tailed test, α = 0.10 Select one:

-z0 = -1.645, z0 = 1.645; z < -1.645, z > 1.645

Find the critical value and rejection region for the type of z-test with level of significance α.Two-tailed test, α = 0.08 Select one:

-z0 = -1.75, z0 = 1.75; z < 1.75, z > 1.75

Find the critical value and rejection region for the type of z-test with level of significance α.Two-tailed test, α = 0.01 Select one:

-z0 = -2.575, z0 = 2.575; z < -2.575, z > 2.575

The P-value for a hypothesis test is P = 0.033. Do you reject or fail to reject H0 when the level of significance is α = 0.01? Select one:

. fail to reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Left-tailed testz = -2.05α = 0.05The test statistic in a left-tailed test is z = -2.05. Select one:

0.0202; reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Left-tailed testz = -1.83α = 0.05 Select one:

0.0336; reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Two-tailed testz = 1.95α = 0.05 Select one:

0.0512; fail to reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Right-tailed testz = 1.43α = 0.05 Select one:

0.0764; Fail to reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Two-tailed testz = -1.63α = 0.05 Select one:

0.1032; fail to reject H0

Find the P-value for the hypothesis test with the standardized test statistic z. Decide whether to reject H0 for the level of significance α.Right-tailed testz = 0.52α = 0.05 Select one:

0.3015; Fail to reject H0

You wish to test the claim that μ > 35 at a level of significance of α = 0.05 and are given sample statistics n=50, x=35.3 . Assume the population standard deviation is 1.2. Compute the value of the standardized test statistic. Round your answer to two decimal places. Select one:

1.77

You wish to test the claim that μ ≤ 20 at a level of significance of α = 0.01 and are given sample statistics n=40,x=21.8 . Assume the population standard deviation is 4.3. Compute the value of the standardized test statistic. Round your answer to two decimal places. Select one:

2.65

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.Claim: μ = 1680; α = 0.01; σ = 82 Sample statistics: x= 1650, n = 35 Select one:

Fail to reject H0. There is enough evidence at the 1% level of significance to support the claim.

Suppose you want to test the claim that μ ≤ 25.6. Given a sample size of n = 48 and a level of significance of a=0.1 when should you reject H0? Select one:

Reject H0 if the standardized test statistic is greater than 1.28.

Suppose you want to test the claim that μ = 3.5. Given a sample size of n = 35 and a level of significance of a=0.01 when should you reject H0 ? Select one:

Reject H0 if the standardized test statistic is greater than 2.575 or less than -2.575.

Suppose you want to test the claim that μ ≥ 65.4. Given a sample size of n = 35 and a level of significance of a=0.01 when should you reject H0? Select one:

Reject H0 if the standardized test statistic is less than -2.33.

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.Claim: μ ≤ 19; α = 0.01; σ = 4.3Sample statistics: x= 20.8, n = 40 Select one:

Reject H0. There is enough evidence at the 1% level of significance to reject the claim.

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.Claim: μ > 22; α = 0.05; σ = 1.2 Sample statistics: x= 22.3, n = 50

Reject H0. There is enough evidence at the 5% level of significance to support the claim.

Test the claim about the population mean μ at the level of significance α. Assume the population is normally distributed.Claim: μ ≠ 14; α = 0.05; σ = 2.7Sample statistics: x= 13.1, n = 35 Select one:

Reject H0. There is enough evidence at the 5% level of significance to support the claim.

The P-value for a hypothesis test is P = 0.066. Do you reject or fail to reject H0 when the level of significance is α = 0.05? Select one:

fail to reject H0

The P-value for a hypothesis test is P = 0.007. Do you reject or fail to reject H0 when the level of significance is α = 0.01? Select one:

reject H0

Find the critical value and rejection region for the type of z-test with level of significance α.Left-tailed test, α = 0.05 Select one:

z0 = -1.645; z < -1.645

Find the critical value and rejection region for the type of z-test with level of significance α.Left-tailed test, α = 0.025 Select one:

z0 = -1.96; z < -1.96

Find the critical value and rejection region for the type of z-test with level of significance α.Right-tailed test, α = 0.01 Select one:

z0 = 2.33; z > 2.33